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2 Sheets-Sheet l.

(No Model.)

J. J. BURK.

HOOP BOILING AND NAILING MACHINE.

Patented June 5, 1888.

Witnesses.

Q ADM N4 PETERS. Phowulho m mr. Washinglcn. 0.6.

(No Model.) 2 Sheets-Sheet; 2.

J. J. BURK.

HOOP GOI LING AND NAILING MACHINE. No. 278,773. Patented June 5,1883. D 2 c:

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UNITED STATES ATENT -rFIcE.

JOHN J. BURK, OF BUFFALO, NE? YORK, ASSIGNOR OF ONE-HALF TO EDWVARD M. JEVETT, OF SAME PLACE.

HOOP COILING AND NAILING MACHINE.

SPECIFICATION forming part of Letters Patent No. 278,773, dated June 5, 1883..

Application filed October 1], 1882.

T 0 all whom, it may concern;

Be it known that I, J 0133? J. BURK, a citizen of the United States, residing in Buffalo, in the county of Erie and State of New York, have invented certain new and useful Improvements in Hoop Forming and Nailing Machines, of which the following is a specification.

The object of this invention is to provide the means for bending and forming hoops automatically, as will be fully and clearly hereinafter shown by reference to the accompanying drawings, in which Figure l is a side elevation of the machine complete, except the nailing device' Fig. 2 is a detached front elevation of the nailing and hoop-bending n1echanism,showing a hoop bent and the position of the parts when the last nail Fig. 3 is an enlarged vertical longitudinal section of the nailing apparatus, and Fig. 4 is a top view of the same. Fig. 5 is an end view and a vertical section through the center of a portion of the hoop-bending niachinery. Fig. 6 is aback view of the devices for bendingthe hoops, and a portion of the frame of the machine; and Fig. 7 represents an enlarged section through a part of the hoop bending mechanism.

A represents the frame of the machine B,tl1e reciprocating bed, upon which the hoop to be bent is placed preparatoryto bending and nailing. On the upper part of the bedBis arack, O, which gears into the spur-wheelD. The bed 13 is arranged upon the frame A so as to slide lengthwise back and forth along the same. (Sec Figs. 1 and 5.) It receives its reciprocating movements by means of the pinion E on shaft E, spur-wheel F, and rack G on the under side of the bed B.

G is the forward driving-pulley, secured to the shaft E; and G represents the backward driving-pulley, arranged on the same shaft in any well-known way.

G is a loose pulley. The reversing mechanism consists of the belt-reversing device H, arranged in the ordinary way, so as to move back and forth along the shaft H without turning on it. \Vithin the frame or hanger I is a vertical shaft, J, provided with ahorizontallyprojecting pin, J, and on the reciprocating bed B is a vertical pin, J of which there are (No model.)

two, one near each end of the bed 13. (See Figs. 1, 5,a-nd 6.) come in contact with the pin J when the bed B is near the end of its forward and backward movements, and thereby turn the shaft J back and forth. On the upper part of the shaft J is an arm, K, having a connecting-rod, K, jointed thereto and to the reversing device H. Two be1tsone of which is a cross-beltare arranged in any ordinary way, and passed through the openings a in the reversing de vice H, and around the driving-pulleys, so that when the device or arm H ismoved back and forth on the shaft H the belts will be moved from one pulley to the otherthat is,

when moving the bedB forward the straight belt is on the driving-pulley G and the crossbelt is on the loose pulley G X'Vhen the bed B is moving in the opposite direction the straight belt is 011 the loose pulley and the cross-belt on the driving-pulley G but as this reversing mechanism is well known a further description here is unnecessary.

K represents an annular rim, upon which the hoop is formed. It projects out from and forms a part of the gear-wheel D, which turns on the shaft H. "Around the gear-wheel D is arranged a series of hoop-forming rollers, L, having pinions L, forming a part of or connected to them, which pinions gear into the wheel 1). The rollers L are each connected to angular arms L (See Figs. 6 and 7.) These arms are secured in slots or openings M in a stationary disk or plate, M, which disk M is rigidly secured to the frame A. The parts I) of the arms L are arranged radially on the disk M, and pass through holes in the rims c 0. (See Figs. 6 and 7..) Each of the parts I) is provided with a spring, (I, and a nut, e, for adjusting the force of the springs, the object of the springs being to force the rollers L against the hoop and forming-rim K the nuts 6 being arranged so as to screw up or down on the parts b, so as to increase or diminish the strength of the springs, as may be desired.

The hoops, after being formed and nailed, as in Fig. 2, are released from the pressure of the They are placed so as to i forming-rollers L by means of the notched wheelN, (see Figs. 5, 6, and 7,) an arm, N, and angular pin O, rigidly fastened to thebed '2, 3, and 5.)

B. Immediately after this action of the notched wheel N the pin J in the frame B turns the shaft J and reverses the movement of frame B, and also (by means of the connection f shown in Fig. 5, the irame-piecej", and pushing-bars g) the hoop is pushed off.

The nailing mechanism is constructed as followsi A frame, P, is bolted or otherwise fastened to the under part of the bed B, and is provided with a series of driving-bolts, Q, corresponding in number to the number of nails to be driven in the hoop, and having heads 9', with flat inclined sides. (See Figs. At the top of each of bolts Q is a pin, '1', of smaller diameter than the bolt, but sufliciently large to drive a nail. The tops of the pins 5 when at the limit of their upward movement, reach the under part of the hoop. On the frame A is rigidly fastened a projecting piece, R, placed in such a position that as the bed B moves forward, the heads 1 of the bolts Q pass over it and are each successively forced upward, as will be readily understood. 1 is a gage-piece pivoted to the bed B by a pin, Z, on one end. Its opposite end, m, which is forked,as shown in Fig. 4., is kept up, as shown in Figs. 1 and 3, by a spiral or other equivalent spring, -)1.

The operation of my invention is as follows: A nail is first put into each hole V, so that the heads of the nails will rest on the top of the pins 1' A hoop, S, is placed upon the bed B, with its end in the forked portion of the gage OrhOlding-piece Z, and as the bed B is moved forward in the direction of the arrows t (see Fig. 1) the opposite end of the hoop is forced forward against and over a curved pivoted guide-piece, n, so as to curve up between the rollers L and around the former K", as shown in Fig. 2. As the forward motion is continued until the hoop is fully formedand the ends lapped, each nail is forced up through the hoop in succession as the bolt-heads r are successively forced up by their inclined sides passing over the projection R, and the nails are thereby driven up through the hoop and clinched. The moment the last nail is driven.

the hoop is released from the pressure of the rollers L, and then pushed off, as hereinbefore mentioned. The bed B then returns to the starting-point, and is then ready to receive another hoop.

I claim as my invention- 1. The frame A, provided with a bed, B, and a reversing mechanism, substantially as specified, in combination with the former K rollers L, gearing D L, and a pivoted forked holding device, Z, providedwith a spring, a, for forming the hoop, substantially as described.

2. The hoop-nailing device consisting of the frame P, and bolts Q, provided with heads 0', having inclined sides, in combination with the projecting piece R, frame A, movable bed B, former I, and their operating mechanism, substantially as described.

3. In a hoop forming and nailing machine, the former K and forming-rollers L, provided with the bent arms L and I), in combination with the springs d, and the releasing device N and its operating mechanism, substantially as described, for the purpose of lifting the rollersL away from the hoop or former K as specified.

l. The combination of the reciprocating bed B, provided with the vertical pins J and the vertical shaft J, having an arm, K, connected by a connecting-rod, K, to the reversing de vice H, for the purposes of reversing the pulleys.

5. The reciprocating bed B, provided with the vertical or bent pins 0, arm N, ratchetwheel N, the frame f, adapted to slide on the shaft H, and pushing-bars y, in combination with the connecting-bar f, reversing device H,

adapted to slide on the shaft H, and its connecting parts, adapted for joint operation, substantially as described.

JOHN J. BUBK. Vitnesses:

J AMES SANGSTER, J. M. CALDXVELL. 

